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EP3527353B1 - Kunststoffgehäuse für eine monolitische fernbedienung - Google Patents

Kunststoffgehäuse für eine monolitische fernbedienung Download PDF

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Publication number
EP3527353B1
EP3527353B1 EP19164688.4A EP19164688A EP3527353B1 EP 3527353 B1 EP3527353 B1 EP 3527353B1 EP 19164688 A EP19164688 A EP 19164688A EP 3527353 B1 EP3527353 B1 EP 3527353B1
Authority
EP
European Patent Office
Prior art keywords
housing
mold
plastic housing
mold cavities
miter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19164688.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3527353C0 (de
EP3527353A3 (de
EP3527353A2 (de
Inventor
Ferdinand Maier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FM Marketing GmbH
Original Assignee
FM Marketing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FM Marketing GmbH filed Critical FM Marketing GmbH
Publication of EP3527353A2 publication Critical patent/EP3527353A2/de
Publication of EP3527353A3 publication Critical patent/EP3527353A3/de
Application granted granted Critical
Publication of EP3527353B1 publication Critical patent/EP3527353B1/de
Publication of EP3527353C0 publication Critical patent/EP3527353C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0214—Hand-held casings
    • H01H9/0235—Hand-held casings specially adapted for remote control, e.g. of audio or video apparatus
    • H01H9/0242—Protective enclosures; Cushioning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C45/401—Ejector pin constructions or mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0214—Hand-held casings
    • H01H9/0235—Hand-held casings specially adapted for remote control, e.g. of audio or video apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/032—Remote control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/10—Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing

Definitions

  • the present invention relates to a plastic housing for electronic devices, in particular remote controls.
  • Such a plastic housing is, for example, from the DE 10 2010 045 944 A1 It comprises a first housing part and a second housing part, wherein the first housing part comprises a joining surface directed in the direction of the second housing part and the second housing part comprises a joining surface directed in the direction of the first housing part and wherein the two housing parts are assembled so as to lie against one another at the joining surfaces.
  • the US 2002 / 079 615 A1 discloses an apparatus and method for releasing air trapped in a mold.
  • the mold includes at least one pin formed from a plurality of pin sections. When assembled, the pin sections provide space within them through which trapped air can escape from the mold.
  • the EP 1 108 519 A2 discloses a method of molding a housing half of a cassette by injection molding, in which a vent pin is used to smooth a plastic flow in a mold.
  • the US 2013 / 255 875 A1 discloses a plastic housing, wherein joining surfaces are designed as miter surfaces.
  • a plastic housing for electronic devices comprises a first housing part and a second housing part, wherein the first housing part comprises a joining surface directed in the direction of the second housing part and the second housing part comprises a joining surface directed in the direction of the first housing part, wherein the two housing parts are assembled so that the joining surfaces lie against one another, and wherein the joining surfaces are designed as miter surfaces.
  • the plastic housing is produced by a method in which a primary mold material is introduced into the mold cavities forming the housing parts and air is discharged from the mold cavities at ventilation points which are located at or next to points in the mold cavities at which the miter surfaces of the housing parts are formed.
  • the plastic housing specified is based on the consideration that the plastic housing mentioned at the beginning has form-locking elements that Enlarge the joining surface and thus offer the two housing parts a wider contact surface against each other.
  • the problem with the form-fitting elements is that they have to be precisely coordinated with each other, because otherwise a gap remains between the two housing parts when the plastic housing is assembled, which can be perceived as disturbing, especially in areas with high aesthetic requirements.
  • the joining surfaces be designed as miter surfaces.
  • the miter surfaces of the housing parts are formed at least partially around an interior space that is designed to house an electronic component of the electronic device.
  • the miter surfaces run in a V shape and thus allow the two housing parts to be additionally centered against each other.
  • the miter surfaces thus simultaneously fulfill the function of the previously mentioned form-fitting elements.
  • the miter surfaces are designed to lead into the interior. In this way, all blunt edges on the housing parts that are formed by the miter surfaces are located in the interior of the plastic housing.
  • tools such as ejector pins, ventilation elements or the like can be attached to the blunt edges in a particularly favorable manner on the interior side, so that any remaining burrs or the like are no longer visible afterwards.
  • the specified plastic housing is produced by a process in which a master mold material is introduced into the mold cavities forming the housing parts and air is removed from the mold cavities at ventilation points which is located at or near locations in the mold cavities where the miter surfaces of the housing parts are formed.
  • the development is based on the idea that the original mold material displaces the air present in the mold cavity when it is introduced into it, so that the air must be removed from the mold cavity. Normally, the air is removed from the mold cavity at a parting line between the tool parts that form the mold cavity.
  • the parting lines should be as tight as possible at this point so that no original mold material enters the parting line and leaves a burr that would be disruptive. This tight design of the parting lines means that venting of the mold cavity at the parting line is practically impossible.
  • venting point on or next to the miter surface, preferably in the interior of the plastic housing to be formed, so that on the one hand the venting takes place as close as possible to the miter surface to be formed and thus no burns, inclusions or the like that are perceived as disturbing can form, but on the other hand also manufacturing-related burrs or the like are arranged in the interior of the plastic housing to be formed.
  • channels leading into the mold cavities are used to remove the air from the mold cavities, into which ejector pins are inserted.
  • the air channel through which the air is removed from the mold cavity is kept very small, so that after the mold cavity has been completely ventilated, correspondingly less original mold material penetrates into the ventilation channel.
  • the ventilation channel is automatically cleaned by the ejector pin when the original molded housing part is ejected.
  • the original mold material is introduced into the mold cavities at injection points which are arranged on one side of the mold cavity which is opposite a side with the venting point.
  • the injection points are arranged centrally in the mold cavities in an injection direction of the master mold material. This ensures that the master mold material can be distributed evenly in all directions of the mold cavity. In addition, however, it is also ensured that the master mold material penetrates the pointed areas of the mold cavity last and thus does not harden there prematurely, which could clog the mold cavity.
  • the mold cavities are formed with mold plates that are hermetically sealed at a parting plane before the primary mold material is introduced into the mold cavities. In this way, the above-mentioned burr at the parting plane in the mold cavity is avoided.
  • the miter surfaces of the housing parts to be formed lead into the parting plane.
  • the ventilation points are located on the miter surfaces opposite the parting plane. In this way, it is ensured that burrs or the like caused by the ventilation are arranged in the interior of the plastic housing to be formed and are not visible from the outside.
  • a master mold material is introduced into a mold space forming the housing part and air from the mold cavity at a venting point located at or adjacent to a point in the mold cavity where the miter surface of the housing part is formed.
  • a channel leading into the mold cavity into which an ejector pin is inserted is used to discharge the air from the mold cavity.
  • the original mold material is introduced into the mold cavity at an injection point which is arranged on a side of the mold cavity opposite a side with the venting point.
  • the injection point is arranged on a central axis of the mold space.
  • the mold space is formed by two tool molds, which are hermetically sealed at a parting plane before the primary mold material is introduced into the mold space.
  • the miter surface of the housing part to be formed flows into the parting plane.
  • the ventilation point is located on the mitre surface opposite the parting plane.
  • a housing part of one of the specified plastic housings is produced using one of the specified methods.
  • FIG. 1 shows a remote control 1 for controlling an electronic device not shown in more detail, such as a multimedia device, in a perspective view.
  • the remote control 1 comprises a plastic housing 2, which is composed of a first housing part in the form of an upper shell 3 and a second housing part lower shell 4, as well as two keypads 5 with a plurality of key elements 6.
  • a plastic housing 2 which is composed of a first housing part in the form of an upper shell 3 and a second housing part lower shell 4, as well as two keypads 5 with a plurality of key elements 6.
  • keypads 5 with a plurality of key elements 6.
  • not all of the key elements 6 in the keypad 5 are provided with a reference symbol in the figures.
  • a control pad 8 is arranged between the two key fields 5, which comprises a first key element 9, a second key element 10, a third key element 11 and a fourth key element 12.
  • the four key elements 9 to 12 are arranged circumferentially and at a distance of 90° around a confirmation key 13.
  • the control pad 8 with the four key elements 9 to 12 is designed here as a circular disk.
  • feedback elements 14 in the form of small lamps are arranged on the remote control 1, which can light up depending on a key being pressed on the remote control 1.
  • the remote control 1 is intended to control the operation of the exemplary multimedia device.
  • a user enters control commands as information into the remote control 1 using the buttons 5 on the top cover 3 of the remote control 1, which are then transmitted to the electronic device to be controlled using a transmitter (not shown).
  • Such a command can be entered, for example, as a direction command using the button elements 9 to 12, which then causes the movement of a control element on the exemplary multimedia device in one of four possible directions of movement.
  • remote control 1 is merely an example to make the technical details below easier to understand. However, they can be implemented on any electronic device and in particular on any remote control.
  • the plastic housing 2 is manufactured by molding, which will be explained in the following technical explanations using injection molding as an example.
  • Fig. 2a to 2c are sections of sectional views of an upper shell permanent mold 15, which provide a mold space 16 for injection molding the upper shell 3 of the plastic housing 2.
  • Fig. 3a to 3c Excerpts from sectional views of a lower shell permanent mold 17 are shown, which provide a mold space 16 for injection molding the lower shell 4 of the plastic housing 2.
  • the upper shell permanent mold 15 comprises a pressure side 18, which is also called the nozzle side 18. Opposite the pressure side 18, the upper shell permanent mold 15 comprises a closing side 19, which is also called the ejector side 19. On the pressure side 18 and closing side 19, the upper shell permanent mold 15 is enclosed by two clamping plates 20, on which the remaining elements of the upper shell permanent mold 15 are carried.
  • a Fig. 4 shown mold plate 41, into which a mold insert 21 is inserted.
  • a pressure matrix 22 is molded into the mold insert 21, which forms the convex outer surface of the plastic housing 2 on the upper shell 3.
  • an ejector housing 23 is carried on the clamping plate 20, which is provided on the side opposite the clamping plate 20 with a Pressure plate 24 is closed.
  • a core 25 is formed on the closing-side mold insert 21, which forms the concave inner surface of the plastic housing 2 on the upper shell 3.
  • the matrix 22 and the core 25 together form the upper shell mold space 16.
  • the guide channels 26 have shoulders 28 against which the ejector pins 27 could strike with corresponding counter shoulders 29.
  • the shoulders 28 and counter shoulders 29 are shown in the Fig. 2a and 2b for the sake of clarity, not all of them are provided with a reference symbol. These shoulders 28, 29 are due to the design, because an upper part of the ejector pins 27 is designed as a flat ejector, while the lower part of the ejector pins 27 is made round for stability and manufacturing reasons in order to increase the buckling load capacity.
  • the flat ejectors of the ejector pins 27 are guided in the guide channels 26, while the round areas of the ejector pins 27 below the shoulders 29 are guided in clearance holes that are not further referenced.
  • the ejector pins 27 are carried on an ejector base plate 30 and are positioned in their position by an ejector holding plate 31.
  • the two plates 30, 31 are movably arranged inside the ejector housing 23 so that the ejector pins 27 can be moved via them.
  • Tempering holes 32 run through the pressure plates 21 on the pressure side 18 and on the closing side 19, through which a tempering agent, such as water, can be fed in order to temper the upper shell mold space 16 by cooling or heating. For the sake of clarity, not all of these tempering holes 32 are provided with a reference symbol.
  • the tempering holes 32 have a minimum distance from the mold space 16 which is 10 to 20 times smaller than the width of the upper shell 3 of the plastic housing 2. In this design, 2mm was chosen as the minimum distance.
  • the diameter of the tempering holes 32 is between 4 and 5 times as large as the minimum distance. In this design, this would be between 8mm and 10mm. The larger the tempering holes 32 are, the faster the tempering takes place.
  • the lower shell permanent mold 17 is constructed in the same way as the upper shell permanent mold 15. Therefore, in the Fig. 3a to 3c the same reference numerals are used as in the Fig. 2a to 2c
  • the explanations given above with regard to the upper shell permanent mold 15 apply analogously to the lower shell permanent mold 17. For the sake of brevity, this will therefore not be repeated.
  • the only difference to the upper shell permanent mold 15 is that two mold inserts 21 are inserted into the mold plate (not shown) of the lower shell permanent mold 17 on the pressure side 18, which insert a corresponding number of tempering bores 32 into the lower shell permanent mold 17.
  • the upper shell permanent mold 15 and the lower shell permanent mold 17 can be used together with another, Fig. 4 and 5 permanent mold 35 shown in FIG. 1 for producing a battery cover can be arranged in a common tool, which will be discussed in more detail later.
  • a variothermal injection molding process is used to produce an upper shell 3 and/or a lower shell 4. While in injection molding, particularly of plastic, tempering is usually understood to mean cooling in order to dissipate the thermal energy of the molten original mold material, in a variothermal injection molding process the mold cavity 16 is first heated up and then cooled again before the original mold material is injected. In the present embodiment, the mold insert 21 is placed on the The pressure side 18 and the closing side 19 are equally tempered, i.e. initially heated. This ensures that no weld lines occur on the finished product, particularly when injection molding high-gloss housing parts 3, 4.
  • the corresponding mold space 16 is closed.
  • the clamping plate 20 on the closing side 19 is moved against the clamping plate 20 on the pressure side 18 until the two mold plates 21, in which the matrix 20 and the core 25 are formed, touch each other.
  • a Fig. 5 and 6 34 into the mold cavity 16.
  • M-ABS methyl methacrylate acrylonitrile butadiene styrene
  • the original mold material introduced into the mold cavity 16 is distributed there and displaces the air present there. This must be removed accordingly, which will be discussed in more detail later.
  • the mold inserts 21 are cooled again via the tempering holes 32 so that the master mold material solidifies.
  • cold water is forced through the tempering holes 32.
  • the mold cavity 16 is then opened and the molded part produced in this way is ejected from the tool via the ejector pins 27.
  • the ejector base plate 30 presses the ejector pins 27 against the opened mold cavity 16, so that the molded part produced there, i.e. the upper shell 3 or the lower shell 4, is released and can fall out of the tool.
  • the ejector pins 27 are then withdrawn from the ejector holding plate 31 and the entire tool is returned to its original state so that the injection molding process can be started again.
  • the plastic housing 2 of the remote control 1 should have as monolithic an appearance as possible. Therefore, when the upper shell 3 and the lower shell 4 are assembled at a joining surface 36, a butt joint between the two shells 3, 4 should fall on an edge so that as little gap as possible is visible between the two shells 3, 4. In this way, it would be difficult for the observer to tell whether the plastic housing 2 of the remote control 1 is a one-piece or a multi-piece component. In this way, the remote control 1 has a significantly slimmer appearance, especially if the upper shell 3 is designed in a color contrast to the lower shell 4.
  • the joining surfaces 36 on the two shells 3, 4 are designed in such a way that the two shells 3, 4 can be connected to one another via a miter joint.
  • the joining surfaces 36 will therefore be referred to below as miter surfaces 36.
  • miter surfaces 36 When producing the miter surfaces 36, however, it must be noted that this will result in jumps in the wall thickness 37 of the shells 3, 4 to be manufactured, which can lead to defects in the surfaces of the shells 3, 4 to be manufactured.
  • the shells 3, 4 must taper as sharply as possible at the miter surfaces 36. This means that the wall thickness 37 drops from a normal wall thickness of, for example, 2 mm to a wall thickness of less than 0.2 mm. Therefore, when using the injection molding process described above, care must be taken to ensure that the large jumps in the wall thickness 37 do not encourage the formation of surface defects such as burns on the shells 3, 4.
  • a parting plane 38 between the mold inserts can be used for the above-mentioned ventilation of the mold cavity 16.
  • the mold cavity 16 is completely vented, then the original mold material subsequently penetrates into it, which leads to the formation of burrs.
  • burrs contradict the desired monolithic appearance of the plastic housing 2 in particular, which is why ventilation via the parting plane 38 is not possible.
  • the ejector pins 27 are arranged in the area of the miter surfaces 36 towards the inside of the plastic housing 2 to be manufactured.
  • the guide channels 26 and the ejector pins 27 can be designed in such a way that a sufficient gap remains between them, through which the mold space 16 can be ventilated.
  • the advantage of this solution is that when the finished molded part, i.e. one of the shells 3, 4, is ejected, the guide channels 26 are simultaneously cleaned by the movement of the ejector pins 27. In addition, the air can escape from the guide channels 26 again when the finished molded part is ejected.
  • the mold inserts 21, which each form a mold space 16 must always be placed exactly on top of each other in order to ensure a precisely running mitre surface 36. This positioning is explained below using the Fig. 4 to 6 which show in a perspective view a pressure-side half 39 and a closing-side half 40 of an injection molding tool in which the upper shell permanent mold 15, the lower shell permanent mold 17 and the battery cover permanent mold 35 are formed together.
  • the mold inserts 21 of the corresponding permanent molds 15, 17 and 35 are held in the mold plates 41.
  • FIG. 5 additional reset elements 44 can be seen, with which the two halves 39, 40 can be pressed apart in the mold cavities 16 after the primary molding masses for the shells 3, 4 to be produced have cooled.
  • guide columns 45 are attached to the pressure-side half 39, which can be inserted into corresponding guide holes 46 on the closing-side half 40.
  • the above mentioned sprue channels 34 are in the Fig. 4 and 5 shown, with view 33 in Fig. 5 by an arrow in Fig. 4 is indicated.
  • the sprue 34 of the upper shell permanent mold 15 opens into a retaining base 54 on the closing-side half 40.
  • the primary mold material to be processed collects in the retaining base 54 and is diverted so that the primary mold material exits the sprue 34 for the upper shell 3 to be manufactured at an angle to its ejection direction.
  • the sprue 34 is designed as a tunnel gate and the upper shell permanent mold 15 as a tear-off injection mold.
  • the halves 39, 40 are provided with a double centering.
  • a first centering roughly centers the two halves 39, 40 against each other.
  • the pressure-side half 39 Tool centering pins 47 are screwed on, which engage in corresponding tool centering receptacles 48 on the closing-side half 40 when the mold space 16 is closed.
  • mold insert centering pins 49 are also formed on the mold inserts 21 on the pressure-side half 39, which can be inserted into mold insert centering receptacles 50 in the mold inserts 21 of the closing-side half 40.
  • the mold insert centering pins 49 are designed to be smaller than the tool centering pins 47, so that when the mold cavity 16 is closed, the coarse centering takes effect first, and only when this is largely completed does the fine centering come into effect.
  • the sprue channels 34 and thus the injection points are arranged on central axes 51 of the mold spaces 16, so that the master mold material can spread and distribute evenly after penetrating the respective mold space 16. This also ensures that the master mold material penetrates into the edge zones with the above-mentioned jumps in the wall thickness 37, which form the miter surfaces 36, last and evenly fills these areas of the mold space 16. This also ensures that the master mold material does not harden prematurely near the sprue channel 34 due to a mold space area that is too thin.
  • the shells 3, 4 produced with the tool and method described above can, after being ejected from the tool, be assembled into the plastic housing 2 in a joining direction 52 in a manner indicated in Fig. 6a and thus enclose an interior space 53 indicated in Fig. 6b, in which, for example, a circuit board (not shown further) can be accommodated as the electronics of the remote control 1.
  • FIG. 8a and 8b An example of an interior view of the manufactured upper shells 3 and lower shells 4 is shown in Fig. 8a and 8b This means that the view corresponds to the Fig. 8a and 8b what is formed with the closing half 40 of the tool molds.
  • support surfaces 55 which the ejector pins 27 engage in order to eject the upper shell 3 or lower shell 4 from the closing-side half 40.
  • the ejector pins 27 and thus the support surfaces 55 are rectangular in shape, with the broad side of the rectangular shape extending in the circumferential direction around the upper shell 3 or lower shell 4.
  • the ejector pins 27 and thus the support surfaces 55 are arranged on an edge 56 of the upper shell 3 or lower shell 4 directed towards the interior 53. This ensures that the outer edges of the two shells 3, 4 are flush and the monolithic appearance of the remote control is not disturbed.
  • the ejector pins 27 allow the shells 3, 4 to be recessed at the support surfaces 55.
  • pins 42' and sleeves 43' formed by the pin form elements 42 and sleeve form elements 43 are shown, of which, for the sake of clarity, not all are marked with a are provided with their own reference symbols.
  • Fig. 8b the point 34' where the sprue 34 for the lower shell 4 ended can be seen.
  • the corresponding point 34' on the upper shell is in the perspective of the Fig. 8a not to be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casings For Electric Apparatus (AREA)
  • Selective Calling Equipment (AREA)
  • Massaging Devices (AREA)
EP19164688.4A 2015-12-23 2016-12-20 Kunststoffgehäuse für eine monolitische fernbedienung Active EP3527353B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015016784.7A DE102015016784B4 (de) 2015-12-23 2015-12-23 Monolitische Fernbedienung und Verfahren zur Herstellung derselben
PCT/EP2016/082031 WO2017108862A2 (de) 2015-12-23 2016-12-20 Monolitische fernbedienung
EP16815857.4A EP3393753B1 (de) 2015-12-23 2016-12-20 Monolitische fernbedienung

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2016/082031 Previously-Filed-Application WO2017108862A2 (de) 2015-12-23 2016-12-20 Monolitische fernbedienung
EP16815857.4A Division EP3393753B1 (de) 2015-12-23 2016-12-20 Monolitische fernbedienung

Publications (4)

Publication Number Publication Date
EP3527353A2 EP3527353A2 (de) 2019-08-21
EP3527353A3 EP3527353A3 (de) 2019-12-04
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EP16815857.4A Active EP3393753B1 (de) 2015-12-23 2016-12-20 Monolitische fernbedienung

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EP (2) EP3527353B1 (da)
JP (1) JP6951360B2 (da)
CN (1) CN108602281A (da)
CA (1) CA3009260C (da)
DE (1) DE102015016784B4 (da)
DK (1) DK3393753T3 (da)
ES (1) ES2737448T3 (da)
HK (1) HK1256114A1 (da)
HR (1) HRP20191255T1 (da)
HU (1) HUE044626T2 (da)
LT (1) LT3393753T (da)
PL (1) PL3393753T3 (da)
PT (1) PT3393753T (da)
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DE102021127425A1 (de) 2021-10-21 2023-04-27 Fm Marketing Gmbh Bruchstabiles elektrisches Handgerät, insbesondere Fernbedienung

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CA3009260A1 (en) 2017-06-29
WO2017108862A2 (de) 2017-06-29
DK3393753T3 (da) 2019-07-22
PL3393753T3 (pl) 2020-03-31
CA3009260C (en) 2023-11-28
SI3393753T1 (sl) 2019-11-29
DE102015016784A1 (de) 2017-06-29
US20210166893A1 (en) 2021-06-03
HRP20191255T1 (hr) 2019-10-18
PT3393753T (pt) 2019-08-05
DE102015016784B4 (de) 2018-12-20
EP3393753B1 (de) 2019-04-24
US20220392718A1 (en) 2022-12-08
JP2019511886A (ja) 2019-04-25
ES2737448T3 (es) 2020-01-14
EP3527353C0 (de) 2024-11-06
EP3527353A3 (de) 2019-12-04
EP3393753A2 (de) 2018-10-31
HUE044626T2 (hu) 2019-11-28
LT3393753T (lt) 2019-08-26
JP6951360B2 (ja) 2021-10-20
EP3527353A2 (de) 2019-08-21
HK1256114A1 (zh) 2019-09-13
WO2017108862A3 (de) 2017-08-17
CN108602281A (zh) 2018-09-28

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